Oxidative coupling of methane on the superionic conductors

✍ Scribed by Bi Ying-Li; Li Li-Tao; Zhen Kai-Ji

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 260 KB
• Volume: 24
• Category: Article
• ISSN: 0920-5861
• DOI: 10.1016/0920-5861(95)00033-c

✦ Synopsis

The reaction mechanism of the oxidative coupling of methane (OCM) has attracted world wide attention. In this paper a series of catalysts modified by Li +, Na ÷ containing superionic conductors or solid electrolytes have been tested for the OCM. It was observed that the addition of A2BO4 (A: Li ÷, Na ÷ ) compounds to La203 and Na ÷ containing superionic conductors to CaO enhanced C2 yield, and the C2 yield of the modified catalysts was intimately related with their conductivities. The effects of Li + and Na ÷ on the conductivity and catalytic performance were discussed. Only when Li ÷ and Na ÷ containing systems have high conductivity, the catalyst may have a good catalytic performance. A mechanism for interpreting the significant effects of alkali metals was proposed.